What is the formula for the outside diameter of the magnet coils?

The formula for the outside diameter (OD) of a magnet coil essentially depends on the design and specific construction characteristics of the coil, including the core material, the number of windings, the wire thickness, and any insulation or casing. There isn’t a universal single formula for determining the outside diameter of magnet coils as it significantly varies by application and design specifications. However, a simplified approach to approximating the outside diameter of a cylindrical magnet coil can be represented as follows:

[ OD = ID + 2(N times d) + 2 times C ]

Where:

– ( OD ) = Outside Diameter of the coil

– ( ID ) = Inside Diameter of the coil (or core diameter if the coil is wound around a core)

– ( N ) = Number of windings (layers)

– ( d ) = Diameter of the wire used (including insulation if present)

– ( C ) = Clearance or additional coating thickness on the outermost layer

This formula estimates the outside diameter by starting with the core’s diameter, adding twice the product of the number of layers and the wire diameter (to account for both sides of the coil), and adding any additional clearance or protective coatings on the outer layer.

It is essential to recognize that this formula makes several simplifications and assumes a cylindrical coil with uniform winding density and wire diameter. Practical coil design may require more detailed calculations considering factors such as the varying shapes of coils, non-uniform wire diameters, different